Glyphosate et résistance en Australie

NEW ZEALAND PLANT PROTECTION - 2016 - Strategies to manage the evolution of glyphosate resistance in New Zealand. New Zealand Plant Protection 69: 252 - 257 (2016) Strategies to manage the evolution of glyphosate resistance in New Zealand. ADELAIDE RESEARCH - 2006 - Thèse en ligne : Weed resistance risk management in glyphosate-resistant cotton. UNIVERSITY OF ADELAIDE - 2013 - Thèse en ligne : Characterisation and management of glyphosate resistant fence line populations of annual ryegrass (Lolium rigidum Gaud.)
GRDC 03/06/14 Red brome confirmed resistant to glyphosate in Western Australia. One population of red brome (Bromus rubens) has been confirmed resistant to glyphosate in the central wheatbelt of Western Australia.

Red brome with giant brome in the background. Photo by Agronomo. This is the first red brome population to be confirmed resistant to glyphosate in the world and is the third glyphosate resistant grass weed species found in Western Australia. “This finding is of particular concern for no-till farmers who rely heavily on glyphosate for grass weed control prior to sowing and in non-crop areas such as fence lines and firebreaks,” Department of Agriculture and Food, Western Australia (DAFWA) researcher Abul Hashem said. Dr Hashem and DAFWA’s Catherine Borger discovered the glyphosate resistant red brome under a Grains Research and Development Corporation (GRDC) funded project also involving the Australian Herbicide Resistance Initiative (AHRI).

Rate your glyphosate resistance risk About the toolkit This online toolkit is for both growers and advisors to check the level of risk for developing glyphosate-resistant weeds on their farm.

It is divided into two sections: Resistance Knowledge Quiz Test your knowledge of herbicide resistance. Risk Assessment Tool Assess your on-farm risk of developing glyphosate-resistant weed populations and test out strategies for reducing it. Enter information on your current practices (including crop rotation, crop density, and weed control tactics), and which weed species you usually have to control. The tool then calculates a glyphosate resistance risk score for the paddock, and a level of risk for each weed identified. You can use the tool more than once, to rate different paddocks on your farm or to try out different scenarios. Toolkit requirements Flash Player 6 or later.
AGRIC_WA_GOV_AU 04/06/14 Crop hygiene essential to reduce the spread of glyphosate resistance. Agribusiness Crop Updates 2009 (Australie) - Risk of glyphosate resistance in wide-row lupin cropping systems. Australian Herbicide Resistance Initiative (AHRI) 21/09/10 New paper "Evolution in action - plants resistant to herbicides"

Australian glyphosate sustainability working group - Glyphosate resistant weeds in Australia.
DPI_NSW_GOV_AU 24/02/14 World's first cases of sowthistle populations resistant to glyphosate. 24 Feb 2014 Department of Primary Industries (DPI) has confirmed the world’s first cases of glyphosate resistance in two sowthistle populations in the State’s north west.

DPI Technical Specialist Weeds, Tony Cook based at Tamworth Agricultural Institute, said the discovery is a real concern to grain and cotton farmers in the northern grain region. “Due to its wind borne seed, glyphosate resistant sowthistle populations will spread rapidly, similar to fleabane,” Mr Cook said. “Sowthistle is a seasonal weed, which through reduced tillage agriculture and repeated use of glyphosate has aided its spread in recent years. “It is commonly found around buildings, fencelines and roadsides where glyphosate is frequently used. “Now that we have identified the problem landholders are able to make critical decisions regarding weed management on their property.” “We have found that timing is crucial and to treat the plants at the early rosette stage to ensure effective control.
AUSTRALIAN GOVERNMENT 18/12/12 One in 10 weeds high risk for glyphosate resistance.

Researchers say 23 weed species are now at high risk of developing glyphosate resistance, including several important grasses and damaging environmental weeds like fireweed and parthenium weed.

Andrew Storrie, Australian Glyphosate Sustainability Working Group executive officer says most of the weeds tested are found across Australia and one in 10 weed species have a high risk of glyphosate resistance. “While resistance to glyphosate in cropping has been making headlines around the world, this study suggests it could become a problem in any Australian weed management situation,” Mr Storrie says. The project was also supported by the Cotton Catchment Communities Cooperative Research Corporation.
European Weed Research Society Weed Research 2003 43, 418–427 Simulating evolution of glyphosate resistance in Lolium rigidum II.